The most destructive volcanic eruption in United States history happened less than half a century ago in Washington state. On May 18, 1980, the north side of Mount St. Helens, in southwestern ...

The US Geological Survey (USGS) has just installed some of the first sensors of their kind on the east side of the mountain.

World’s largest lahar evacuation drill In the wake of the Mount St. Helens eruption, the US Geological Survey set up an lahar detection system at Mount Rainier in 1998, which since 2017 has been ...

The snowcapped peak of Mount Rainier, which towers 4.3 kilometers (2.7 miles) above sea level in Washington state, has not produced a significant volcanic eruption in the past 1,000 years. Yet, more ...

MOUNT ST. HELENS, Wash. -- A 15-year-old girl from Longview has been missing on the southeast side of Mount St. Helens since Monday, according to the Skamania County Sheriff's Office. Katrina Osborne ...

Forty-three years ago today, Mount St. Helens erupted, triggering a magnitude 5 earthquake and spewing ash, mud and debris across southwest Washington. The explosion killed 57 people and changed the ...

(CNN) — The snowcapped peak of Mount Rainier, which towers 4.3 kilometers (2.7 miles) above sea level in Washington state, has not produced a significant volcanic eruption in the past 1,000 years. Yet ...